Method for making a jewelry ring

Abstract

Provided is a jewelry ring comprising a substrate, a first coating of a metallic nitride or a metallic boride, and an external metallic coating. Also provided is a metallic article comprising a substrate comprising tungsten carbide, cobalt, tungsten, titanium, titanium carbide, zirconium, tantalum or aluminum; a first coating of a metallic nitride or a metallic boride; and an external metallic coating. A method for making a jewelry ring comprising a substrate, a first coating of a metallic nitride or a metallic boride, and an external metallic coating is additionally provided. Further provided is a method for making a metallic article comprising a substrate comprising tungsten carbide, cobalt, tungsten, titanium, titanium carbide, zirconium, tantalum or aluminum; a first coating of a metallic nitride or a metallic boride; and an external metallic coating.

The invention claimed is: 
     
       1. A method for making a metallic article comprising a substrate comprising tungsten carbide, cobalt, tungsten, titanium, titanium carbide, zirconium, tantalum, aluminum, titanium-zirconium, titanium-niobium-zirconium, stainless steel, molybdenum, niobium, rhenium, iridium, iron, 316 stainless steel, cobalt chrome, cobalt chromium, nickel, nitinol, aluminum carbide, vanadium, ruthenium, copper, tungsten copper, zinc, tin, or hafnium, or alloys of each of the foregoing; a first coating of a metallic nitride or a metallic boride; and an external metallic coating, the method comprising
 forming the substrate into a desired shape; 
 depositing the first coating onto the substrate; and 
 depositing the external metallic coating onto the first coating, the external metallic coating surrounding the first coating such that the external metallic coating is outermost, wherein the external metallic coating includes at least one item from at least one of group 
 (a) chromium-titanium nitride (CrTiN), aluminum-titanium nitride (AlTiN), aluminum-titanium-chromium nitride (AlTiCrN), tungsten nitride (WN), tungsten carbide, tungsten, zirconium, cobalt chrome, cobalt chromium, nitinol, aluminum carbide, vanadium, copper, brass, bronze, tungsten copper, zinc, tin, German silver, niobium, molybdenum, hafnium, rhenium, chromium, silver nitride, aluminum nitride, vanadium nitride, tantalum nitride, tantalum carbide, and cobalt chrome molybdenum, or any combination thereof, or 
 (b) cobalt and tantalum, excluding gold (au). 
 
     
     
       2. The method of  claim 1 , wherein the first coating is deposited onto the substrate by physical vapor deposition or chemical vapor deposition. 
     
     
       3. The method of  claim 1 , wherein the external metallic coating is deposited onto the first coating using electroplating, PVD or CVD. 
     
     
       4. The method of  claim 1 , wherein the first coating is titanium nitride (TiN), titanium(2) nitride (Ti 2 N), titanium carbo-nitride (TiCN), titanium-aluminum nitride (TiAlN), titanium-aluminum carbo-nitride (TiAlCN), chromium nitride (CrN), zirconium nitride (ZrN), chromium-titanium nitride (CrTiN), aluminum-titanium nitride (AlTiN), aluminum-titanium-chromium nitride (AlTiCrN), tungsten nitride (WN), titanium diboride (TiB 2 ), gold nitride, silver nitride, aluminum nitride, vanadium nitride or tantalum nitride. 
     
     
       5. The method of  claim 4 , wherein the first coating is titanium nitride. 
     
     
       6. The method of  claim 5 , wherein the external metallic coating comprises rhodium. 
     
     
       7. The method of  claim 1 , wherein the external metallic coating further comprises at least one of platinum, rhodium, palladium, ruthenium, silver, a silver alloy, zirconium, tungsten nitride, chrome, tungsten, titanium, titanium carbide, tantalum, iridium, cobalt chrome, cobalt chromium, nickel, nitinol, aluminum carbide, vanadium, tungsten copper, zinc, tin, German silver, niobium, molybdenum, rhenium, hafnium, alloys of each of the foregoing or any combinations thereof. 
     
     
       8. The method of  claim 1 , wherein the external metallic coating comprises rhodium. 
     
     
       9. The method of  claim 1 , wherein the article is an item of jewelry. 
     
     
       10. The method of  claim 9 , wherein the item of jewelry is a ring, pendant, dog tag, hairclip, chain, watchcase, pin, bracelet, necklace, earring, charm, ornamental ring, engagement ring, toe ring, watch, armlet, brocade, clip, fob, ornamental piercing, nose ring, amulet, bangle bracelet, cuff bracelet, link bracelet, cuff link, key chain, money clip, cell phone charm, signet ring, class ring, friendship ring or purity ring or a component any of the foregoing. 
     
     
       11. The method of  claim 9 , wherein the item of jewelry is a finger ring. 
     
     
       12. A method for making a jewelry ring comprising a substrate, a first coating of a metallic nitride or a metallic boride, and an external metallic coating, the method comprising
 forming the substrate into a ring shape; 
 depositing the first coating onto the substrate; and 
 depositing the external metallic coating onto the first coating, the external metallic coating surrounding the first coating such that the external metallic coating is outermost, wherein the external metallic coating includes at least one item from at least one of group 
 (a) chromium-titanium nitride (CrTiN), aluminum-titanium nitride (AlTiN), aluminum-titanium-chromium nitride (AlTiCrN), tungsten nitride (WN), tungsten carbide, tungsten, zirconium, cobalt chrome, cobalt chromium, nitinol, aluminum carbide, vanadium, copper, brass, bronze, tungsten copper, zinc, tin, German silver, niobium, molybdenum, hafnium, rhenium, chromium, silver nitride, aluminum nitride, vanadium nitride, tantalum nitride, tantalum carbide, and cobalt chrome molybdenum, or any combination thereof, or 
 (b) cobalt and tantalum, excluding gold (au). 
 
     
     
       13. A method for making a metallic article consisting of a substrate, a first coating of a metallic nitride or a metallic boride, and an external metallic coating, the method comprising:
 forming the substrate into a ring shape; 
 depositing the first coating onto the substrate; and 
 depositing the external metallic coating onto the first coating, the external metallic coating surrounding the first coating such that the external metallic coating is outermost, wherein the external metallic coating includes at least one item from at least one of group 
 (a) chromium-titanium nitride (CrTiN), aluminum-titanium nitride (AlTiN), aluminum-titanium-chromium nitride (AlTiCrN), tungsten nitride (WN), tungsten carbide, tungsten, zirconium, cobalt chrome, cobalt chromium, nitinol, aluminum carbide, vanadium, copper, brass, bronze, tungsten copper, zinc, tin, German silver, niobium, molybdenum, hafnium, rhenium, chromium, silver nitride, aluminum nitride, vanadium nitride, tantalum nitride, tantalum carbide, and cobalt chrome molybdenum, or 
 (b) cobalt and tantalum.